Added the missing export of 'sun.misc' package in jre-1.7 for camel-disruptor.
CAMEL-7022: UnitOfWorkFactory for spi to make it possible to plugin custom UoW implementations.
CAMEL-7017: Fixed the installation issue of the camel-optaplanner feature so that it works out of the box without any required workaround (e.g. using osgi:install). Thanks Claus for pointing out this problem.